package com.example.android_api;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;

import com.example.android_api.util.WebServiceUtil;

/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class LoginActivity extends Activity implements OnItemSelectedListener {

	/**
	 * Keep track of the login task to ensure we can cancel it if requested.
	 */
	private UserLoginTask mAuthTask = null;

	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;
	private String mCompanyId;

	// private Map<String, String> companyMap = new HashMap<String, String>();
	private List<String> companyList = new ArrayList<String>();
	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;
	private Spinner companySpinner;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_login);
		// 添加默认
		// companyMap.put("company_1", "2c92b8113e2fa058013e2fa6c1870001");
		// companyMap.put("company_2", "2c92b8113e2fa058013e2fa7c0fd0002");

		companyList.add(0, new String("2c92b8113e2fa058013e2fa6c1870001"));
		companyList.add(1, new String("2c92b8113e2fa058013e2fa7c0fd0002"));
		// Set up the login form.
		// mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
		mEmailView = (EditText) findViewById(R.id.email);
		companySpinner = (Spinner) findViewById(R.id.company);
		companySpinner.setOnItemSelectedListener(this);
		// Create an ArrayAdapter using the string array and a default spinner
		// layout
		ArrayAdapter<CharSequence> adapter = ArrayAdapter
				.createFromResource(this, R.array.companyList,
						android.R.layout.simple_spinner_item);
		// Specify the layout to use when the list of choices appears
		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		// Apply the adapter to the spinner
		companySpinner.setAdapter(adapter);
		// mEmailView.setText(mEmail);
		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.login, menu);
		return super.onCreateOptionsMenu(menu);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see android.app.Activity#onMenuItemSelected(int, android.view.MenuItem)
	 */
	@Override
	public boolean onMenuItemSelected(int featureId, MenuItem item) {
		switch (item.getItemId()) {
		case R.id.action_search:
			// openSearch();
			return true;
		case R.id.action_settings:
			// openSettings();
			return true;
		default:
			return super.onOptionsItemSelected(item);
		}
	}

	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {
		if (mAuthTask != null) {
			return;
		}

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);

		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();

		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} 
		/*else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}*/

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			mAuthTask = new UserLoginTask();
			mAuthTask.execute((Void) null);
		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
		@Override
		protected Boolean doInBackground(Void... params) {
			// TODO: attempt authentication against a network service.

			try {
				// Simulate network access.
				Long startTime = (new Date()).getTime();
				boolean flag = WebServiceUtil.checkUser(mEmail, mPassword, mCompanyId, null);
				Long endTime = (new Date()).getTime();
				Thread.sleep(endTime-startTime);
				return flag;
			} catch (InterruptedException e) {
				return false;
			}

			// TODO: register the new account here.
//			return true;
		}

		@Override
		protected void onPostExecute(final Boolean success) {
			mAuthTask = null;
			showProgress(false);

			if (success) {
				finish();

				// 跳转至下一个activity
				Intent intent = new Intent(LoginActivity.this,
						MainActivity.class);
				startActivity(intent);
				Log.i("test", "===");
			} else {
				mPasswordView
						.setError(getString(R.string.error_incorrect_password));
				mPasswordView.requestFocus();
			}
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
			showProgress(false);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * android.widget.AdapterView.OnItemSelectedListener#onItemSelected(android
	 * .widget.AdapterView, android.view.View, int, long)
	 */
	public void onItemSelected(AdapterView<?> parent, View view, int pos,
			long id) {
		// An item was selected. You can retrieve the selected item using
		// parent.getItemAtPosition(pos)
		// String keyParm = (String) parent.getAdapter().getItem(pos);
		// mCompanyId = companyMap.get(parent.getAdapter().getItem(pos));
		mCompanyId = companyList.get(pos);
		Log.i("api", "nnn=" + pos);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * android.widget.AdapterView.OnItemSelectedListener#onNothingSelected(android
	 * .widget.AdapterView)
	 */
	@Override
	public void onNothingSelected(AdapterView<?> parent) {
		// Another interface callback
	}
}
